Rosan is a specialist paediatric dietitian, who has almost 30 years of experience in paediatric nutrition. She qualified as a dietitian in South Africa in 1996 and then completed her paediatric dietetic training in the UK in 2000. She has both an MSc and PhD, which she completed at Imperial College London in 2008 and has worked at St. Mary’s Hospital London, as lead paediatric dietitian before becoming the principal research dietitian for the gastro-allergy at Great Ormond Street Hospital until 2015. She is CEO of StepbyStepKidzNutrition Ltd, which is a paediatric dietetic practice that has multiple specialist paediatric dietitians specialising in food hypersensitivity, growth faltering and the spectrum of aversive eating. Rosan has more than > 100 peer reviewed publications and is the co-author of the Paediatric Clinical Dietetics Pocket Guide. She was the co-module leader for the Food Hypersensitivity Module of the MSc in Allergy at Imperial College from 2008 – 2023 and is currently visiting Professor at KU Leuven, on their MSc on swallow disorders and leading the ARFID course together with ARFID Awareness with University of Huddersfield. She is a Trustee for ARFID Awareness UK and has published multiple papers on feeding difficulties in children with food allergies. She has additional qualification in managing complex feeding difficulties, including the SOS training and runs a multidisciplinary feeding clinic as well as online courses for parents on managing feeding difficulties.